computer crashes when left on overnight

[Guest]

i leave my computer on overnight for various reasons, and most of the time it
crashes. it totally freezes up and i cant even move the mouse. i was
wondering if anybody knew something that i can do to prevent this from
happening?

(it also sometimes locks up like this while im on it)

 

[Guest]

Open control-panel,administration,event viewer.Locate the event/warning
when it crashed,click on the url,this opens kb help/support,usually with a
fix,or answer to it.

 

[Guest]

Another place to check is overheating of the CPU. Make sure you can hear
the little fan running inside the case before going to bed.